highlight the independent variable (the thing that smithers changes)\nsmithers thinks that a special juice…

highlight the independent variable (the thing that smithers changes)\nsmithers thinks that a special juice will increase the productivity of workers. he creates two groups of 50 workers and assigns each group the same task (in this case, theyre supposed to staple a set of papers). group a is given the special juice to drink while they work. group b is not given the special juice. after an hour, smithers counts how many stacks of papers each group has made. group a made 1,587 stacks, group b made 2,113 stacks.
Answer
Brief Explanations:
The independent variable is what the experimenter manipulates. Here, Smithers changes whether the workers get the special juice (Group A gets it, Group B doesn't). So the independent variable is the special juice (or the presence/absence of the special juice given to workers).
Answer:
The independent variable is the special juice (or the presence/absence of the special juice given to the workers).